Because when they added extra thyroid hormone to zebrafish's tanks, their tiny hearts were no longer able to regenerate.

因当他们向斑马鱼鱼缸中加入额外的甲状腺激素时，斑马鱼的小心脏便不能再生了。

These are zebrafish embryos  each less than one millimeter long.

这些是斑马鱼胚胎， 每个长度都不到一毫米。

It’s called FreemoVR, and it’s for mice, zebrafish, and flies.

它被称自由移动虚拟现实，适用小鼠、斑马鱼和果蝇。

But now, scientists have tried to build custom holodecks for fruit flies, zebrafish, and mice.

但现在，家们尝试果蝇、斑马鱼和小鼠建造定制的全息甲板。

In one line of experiments, researchers analyzed some 92,000 zebrafish cells, and gathered data from 7 different embryo stages.

在一系列实验中，研究人员分析了约92000个斑马鱼细胞，并从7个不同的胚胎阶段收集了数据。

All right, well, in honor of the zebrafish study, here's today's listener activity.

好吧，了向斑马鱼研究致敬，今天给大家安排一个听众互动活动。

So just like with the zebrafish, there was a tangible benefit to seeking out new things and reveling in exploration.

就像斑马鱼一样，主动新事物并沉浸之中，确实能带来实际的好处。

The researchers found that zebrafish tended to fight less during the object presentations and also exhibited far fewer stress responses.

研究人员发现，斑马鱼在展示物体时打架的次数减少，表现出的应激反应也少得多。

For example, going back to zebrafish, there was a study in 2022 where researchers introduced 30 different objects into six tanks of zebrafish.

例如，回到斑马鱼，2022年有一项研究，研究人员向六组斑马鱼的水族箱中放入了30种不同的物体。

Submissions this year included water droplets evaporating from the wings of a butterfly, A cell in the spinal cord of a zebra fish and other beautiful scientific imagery.

今年的参赛作品还包括了水滴在蝴蝶翅膀上蒸发过程的录像，斑马鱼脊髓中的细胞以及其他美丽的图像。

And zebrafish often swim in groups, so the researchers used a special bowl and projected a bunch of space invaders -- like the video game!

并且斑马鱼经常成群游动，因此研究人员使用了一个特殊的碗， 并投影了一大堆太空入侵者——就像那个电子游戏一样！

The flies flew around the projected pillar, the mice mostly stayed on the seemingly lower end of the track, and the fish followed their virtual leaders.

果蝇围绕着投影出来的柱子飞来飞去，小鼠大多待在看起来较低的一端轨道上， 而斑马鱼则跟着它们的虚拟领航者游动。

But the team summed it up this way, quote, it is possible that zebrafish, like many other species, benefit from activities that engage their cognitive abilities and preferences.

但该研究团队以如下方式总结道：“可能正如许多其他物种一样，斑马鱼也能从那些能激发其认知能力与偏好的活动中获益。”

Thus, they could trace each zebrafish cell's fate through time to see how a single cell gave rise to a variety of specialized cells, such as heart, nerves, and skin.

因此，他们可以追踪每条斑马鱼细胞的命运随时间的变化，以观察一个单一细胞如何产生各种特化细胞，如心脏、神经和皮肤细胞。

Hold on, let me find some of these pictures... These are zebra fish embryos, which are used in TONS of scientific research for some simple reason: We can look at them!

稍等，我找找这些图片… … 这些是斑马鱼胚胎，由一个简单的原因，它们被大量用研究：我们可以观察它们！

But researchers observed some zebrafish cells switched to different new types – as indicated by the change in what genes were active—after they should have been well committed to a certain fate.

但研究人员观察到，一些斑马鱼的细胞在本应坚定地走向特定命运之后，却转变成了不同新的类型——这从活跃基因的变化中可以看出来。

The reason that finding might matter to us, is that recent studies in mice and zebra fish have shown that hearts with more diploid cells—like a zebra fish's—are able to regenerate and heal themselves.

这一发现可能对我们很重要的原因是，最近对小鼠和斑马鱼的研究表明， 具有更多二倍体细胞的心脏（如斑马鱼的心脏）能够再生和自我修复。

I know one of my colleagues, Frederick Jutfeld, has been doing artificial selection experiments in zebrafish on CT Max, and they can get a little bit of an evolutionary response, but not that much.

我知道我的一位同事弗雷德里克·尤特菲尔德，在斑马鱼身上进行过CT Max的人工选择实验，他们能得到一点进化反应，但不是很多。

And a swish finish finish translating it I'm sure there's someone at UNM who can do that You do know I'm trying to start a legal practice right since been working on the effects of electromagnetic fields on zebrafish and Oh!

嗖嗖嗖地完成翻译，我敢肯定 UNM 有人可以做到这一点，你知道，自从一直在研究电磁场对斑马鱼的影响以来，我正在尝试开始法律实践，哦！